java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label27_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:59:45,535 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:59:45,537 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:59:45,549 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:59:45,550 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:59:45,551 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:59:45,552 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:59:45,554 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:59:45,556 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:59:45,556 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:59:45,557 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:59:45,558 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:59:45,559 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:59:45,560 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:59:45,561 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:59:45,562 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:59:45,563 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:59:45,564 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:59:45,566 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:59:45,568 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:59:45,569 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:59:45,571 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:59:45,573 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:59:45,580 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:59:45,580 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:59:45,581 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:59:45,582 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:59:45,582 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:59:45,598 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:59:45,598 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:59:45,599 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:59:45,600 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:59:45,600 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:59:45,600 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:59:45,600 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:59:45,600 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:59:45,600 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:59:45,601 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:59:45,601 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:59:45,601 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:59:45,602 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:59:45,602 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:59:45,602 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:59:45,602 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:59:45,603 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:59:45,603 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:59:45,603 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:59:45,603 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:59:45,603 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:59:45,604 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:59:45,604 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:59:45,604 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:59:45,604 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:59:45,604 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:59:45,605 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:59:45,605 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:59:45,605 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:59:45,605 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:59:45,605 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:59:45,606 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:59:45,606 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:59:45,606 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:59:45,665 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:59:45,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:59:45,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:59:45,689 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:59:45,689 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:59:45,690 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label27_false-unreach-call.c [2018-10-24 18:59:45,765 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/86fc30cfc/5798f9297ea54a02a4f7f97f21803ff4/FLAG7df612a49 [2018-10-24 18:59:46,524 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:59:46,526 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label27_false-unreach-call.c [2018-10-24 18:59:46,553 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/86fc30cfc/5798f9297ea54a02a4f7f97f21803ff4/FLAG7df612a49 [2018-10-24 18:59:46,569 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/86fc30cfc/5798f9297ea54a02a4f7f97f21803ff4 [2018-10-24 18:59:46,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:59:46,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:59:46,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:59:46,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:59:46,589 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:59:46,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:59:46" (1/1) ... [2018-10-24 18:59:46,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:46, skipping insertion in model container [2018-10-24 18:59:46,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:59:46" (1/1) ... [2018-10-24 18:59:46,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:59:46,744 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:59:47,890 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:59:47,895 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:59:48,405 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:59:48,438 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:59:48,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48 WrapperNode [2018-10-24 18:59:48,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:59:48,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:59:48,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:59:48,441 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:59:48,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (1/1) ... [2018-10-24 18:59:48,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (1/1) ... [2018-10-24 18:59:48,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:59:48,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:59:48,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:59:48,866 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:59:48,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (1/1) ... [2018-10-24 18:59:48,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (1/1) ... [2018-10-24 18:59:48,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (1/1) ... [2018-10-24 18:59:48,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (1/1) ... [2018-10-24 18:59:49,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (1/1) ... [2018-10-24 18:59:49,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (1/1) ... [2018-10-24 18:59:49,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (1/1) ... [2018-10-24 18:59:49,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:59:49,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:59:49,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:59:49,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:59:49,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:59:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:59:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:59:49,250 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:59:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:59:49,250 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:59:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:59:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:59:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:59:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:59:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:59:49,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:59:49,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:59:56,484 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:59:56,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:59:56 BoogieIcfgContainer [2018-10-24 18:59:56,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:59:56,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:59:56,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:59:56,490 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:59:56,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:59:46" (1/3) ... [2018-10-24 18:59:56,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f4d0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:59:56, skipping insertion in model container [2018-10-24 18:59:56,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:59:48" (2/3) ... [2018-10-24 18:59:56,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f4d0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:59:56, skipping insertion in model container [2018-10-24 18:59:56,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:59:56" (3/3) ... [2018-10-24 18:59:56,494 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label27_false-unreach-call.c [2018-10-24 18:59:56,505 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:59:56,516 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:59:56,535 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:59:56,582 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:59:56,582 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:59:56,582 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:59:56,582 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:59:56,583 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:59:56,583 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:59:56,583 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:59:56,583 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:59:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 18:59:56,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 18:59:56,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:59:56,634 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:59:56,636 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:59:56,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:59:56,643 INFO L82 PathProgramCache]: Analyzing trace with hash -917613089, now seen corresponding path program 1 times [2018-10-24 18:59:56,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:59:56,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:59:56,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:59:56,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:59:56,696 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:59:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:59:57,109 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:59:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:59:57,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:59:57,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:59:57,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:59:57,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:59:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:59:57,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:59:57,229 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 19:00:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:00:04,005 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 19:00:04,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:00:04,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-10-24 19:00:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:00:04,037 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 19:00:04,037 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 19:00:04,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:00:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 19:00:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 19:00:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 19:00:04,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 19:00:04,201 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 37 [2018-10-24 19:00:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:00:04,201 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 19:00:04,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:00:04,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 19:00:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 19:00:04,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:00:04,209 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:00:04,209 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:00:04,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:00:04,210 INFO L82 PathProgramCache]: Analyzing trace with hash -42137923, now seen corresponding path program 1 times [2018-10-24 19:00:04,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:00:04,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:04,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:00:04,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:04,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:00:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:00:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:00:04,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:00:04,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:00:04,477 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:00:04,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:00:04,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:00:04,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:00:04,479 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 19:00:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:00:14,247 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-10-24 19:00:14,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:00:14,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-10-24 19:00:14,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:00:14,269 INFO L225 Difference]: With dead ends: 4422 [2018-10-24 19:00:14,269 INFO L226 Difference]: Without dead ends: 2954 [2018-10-24 19:00:14,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:00:14,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-24 19:00:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-10-24 19:00:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-24 19:00:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-10-24 19:00:14,371 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 112 [2018-10-24 19:00:14,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:00:14,372 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-10-24 19:00:14,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:00:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-10-24 19:00:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 19:00:14,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:00:14,377 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:00:14,377 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:00:14,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:00:14,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1260169237, now seen corresponding path program 1 times [2018-10-24 19:00:14,377 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:00:14,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:14,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:00:14,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:14,379 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:00:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:00:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:00:14,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:00:14,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:00:14,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:00:14,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:00:14,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:00:14,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:00:14,599 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-10-24 19:00:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:00:20,469 INFO L93 Difference]: Finished difference Result 7337 states and 12456 transitions. [2018-10-24 19:00:20,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:00:20,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-24 19:00:20,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:00:20,498 INFO L225 Difference]: With dead ends: 7337 [2018-10-24 19:00:20,498 INFO L226 Difference]: Without dead ends: 4415 [2018-10-24 19:00:20,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:00:20,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2018-10-24 19:00:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4397. [2018-10-24 19:00:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4397 states. [2018-10-24 19:00:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6494 transitions. [2018-10-24 19:00:20,651 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6494 transitions. Word has length 124 [2018-10-24 19:00:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:00:20,652 INFO L481 AbstractCegarLoop]: Abstraction has 4397 states and 6494 transitions. [2018-10-24 19:00:20,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:00:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6494 transitions. [2018-10-24 19:00:20,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 19:00:20,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:00:20,663 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:00:20,663 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:00:20,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:00:20,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1828599108, now seen corresponding path program 1 times [2018-10-24 19:00:20,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:00:20,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:20,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:00:20,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:00:20,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:00:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:00:20,989 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:00:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:00:21,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:00:21,082 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:00:21,083 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2018-10-24 19:00:21,085 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1819], [1821], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 19:00:21,152 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:00:21,153 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:00:23,837 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 19:00:23,929 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:00:23,931 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 19:00:23,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:00:23,959 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:00:25,228 INFO L232 lantSequenceWeakener]: Weakened 144 states. On average, predicates are now at 77.97% of their original sizes. [2018-10-24 19:00:25,228 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:00:25,615 INFO L413 sIntCurrentIteration]: We have 148 unified AI predicates [2018-10-24 19:00:25,615 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:00:25,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:00:25,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 19:00:25,617 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:00:25,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 19:00:25,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 19:00:25,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 19:00:25,618 INFO L87 Difference]: Start difference. First operand 4397 states and 6494 transitions. Second operand 7 states. [2018-10-24 19:01:37,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:37,828 INFO L93 Difference]: Finished difference Result 9493 states and 13867 transitions. [2018-10-24 19:01:37,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:01:37,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2018-10-24 19:01:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:37,851 INFO L225 Difference]: With dead ends: 9493 [2018-10-24 19:01:37,851 INFO L226 Difference]: Without dead ends: 5102 [2018-10-24 19:01:37,863 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:01:37,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-10-24 19:01:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5100. [2018-10-24 19:01:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5100 states. [2018-10-24 19:01:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 7209 transitions. [2018-10-24 19:01:38,011 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 7209 transitions. Word has length 149 [2018-10-24 19:01:38,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:38,012 INFO L481 AbstractCegarLoop]: Abstraction has 5100 states and 7209 transitions. [2018-10-24 19:01:38,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 19:01:38,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 7209 transitions. [2018-10-24 19:01:38,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-24 19:01:38,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:38,018 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:01:38,018 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:38,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:38,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2121622530, now seen corresponding path program 1 times [2018-10-24 19:01:38,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:38,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:38,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:38,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:38,020 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 114 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:01:39,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:01:39,005 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:01:39,006 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-10-24 19:01:39,006 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1819], [1821], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 19:01:39,016 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:01:39,016 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:01:40,536 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 19:01:49,857 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:01:49,858 INFO L272 AbstractInterpreter]: Visited 195 different actions 383 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 19:01:49,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:49,864 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:01:53,789 INFO L232 lantSequenceWeakener]: Weakened 84 states. On average, predicates are now at 78.88% of their original sizes. [2018-10-24 19:01:53,790 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:02:39,608 INFO L413 sIntCurrentIteration]: We have 335 unified AI predicates [2018-10-24 19:02:39,608 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:02:39,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:02:39,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-10-24 19:02:39,609 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:02:39,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 19:02:39,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 19:02:39,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-10-24 19:02:39,611 INFO L87 Difference]: Start difference. First operand 5100 states and 7209 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 19:03:33,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:03:33,023 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:03:33,028 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:03:33,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:03:33 BoogieIcfgContainer [2018-10-24 19:03:33,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:03:33,029 INFO L168 Benchmark]: Toolchain (without parser) took 226446.97 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 19:03:33,030 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:03:33,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1855.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:03:33,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 424.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -937.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:03:33,033 INFO L168 Benchmark]: Boogie Preprocessor took 304.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:03:33,034 INFO L168 Benchmark]: RCFGBuilder took 7314.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 503.0 MB). Peak memory consumption was 503.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:03:33,035 INFO L168 Benchmark]: TraceAbstraction took 216542.13 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 645.9 MB. Max. memory is 7.1 GB. [2018-10-24 19:03:33,040 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1855.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 424.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -937.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 304.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7314.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 503.0 MB). Peak memory consumption was 503.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216542.13 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 645.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while BasicCegarLoop was constructing difference of abstraction (5100states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (157 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 216.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 148.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1125 SDtfs, 7915 SDslu, 503 SDs, 0 SdLazy, 11621 SolverSat, 3675 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 513 GetRequests, 402 SyntacticMatches, 72 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 46.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5100occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9958217061241635 AbsIntWeakeningRatio, 0.09523809523809523 AbsIntAvgWeakeningVarsNumRemoved, 322.2153209109731 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 758 NumberOfCodeBlocks, 758 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 753 ConstructedInterpolants, 0 QuantifiedInterpolants, 1406033 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 174/262 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown